【Material】Multi-layer laminated aluminum. Clamp material: stainless steel 【Dimensions】Diameter: 152 mm - Length: 5 m 【Temperature】-30 ° C / +85 ° C 【Widely used】Kitchens, bathrooms, greenhouses, grow rooms, grow cabinets, etc. 【Flame retardant coating】Flexible ventilation duct made of high quality flame retardant aluminum and built-in corrosion resistant wire for reinforcement and long-lasting performance